<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
</head>
<body>
    <script>
        /* 
        http://47.108.197.28:3000/top/playlist
        http://47.108.197.28:3000/mv/first
         */
        /* 在静态方法中this指类 */
        class Http{
            static  baseUrl ="http://47.108.197.28:3000"
            static request(url){
                console.log(this)
                console.log(this.baseUrl)
                return new Promise((resolve,reject)=>{
                    $.ajax({
                        url:this.baseUrl+url,
                        success:res=>{
                            resolve(res)
                        },
                        error:err=>{
                            reject(err);
                        }
                    })
                })
            }
        }
        Http.request("/top/playlist").then(res=>{
            console.log(res)
        })
    </script>
</body>
</html>